scholarly journals Comparison of microleakage between different restorative materials to restore marginal gap at crown margin

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e10823
Author(s):  
Satheesh B. Haralur ◽  
Ghaseb Ahmed AL Ghaseb ◽  
Norah Ali Alqahtani ◽  
Bader Alqahtani
Keyword(s):  
Structural Defect ◽  
Structural Defects ◽  
Glass Ionomer ◽  
Marginal Gap ◽  
Finish Line ◽  
Nickel Chromium ◽  
Carious Lesions ◽  
Luting Cement ◽  
Molar Teeth ◽  
Defect Dimension

Background An occurrence of secondary caries around the indirect restoration margin is reported to remain a leading cause of failures. Objective This study aimed to test the interfacial microleakage of conventional glass-ionomer (CGI), resin-modified glass ionomer (RMGI) and Nano-hybrid composite (CR) restorations at a full veneer margin crown. Methods Ninety human extracted molar teeth were divided into three groups (n = 30). Each group was subdivided into three subgroups (n = 10) according to the extent of the structural defects; The structural defect in G1 had a depth of 1.5 mm, width and length at 2 mm and 1 mm intrusion within the crown cervical margin. The corresponding structural defect dimension values for G2 were 2, 5, 4 and 2 mm with defects extending onto the root structure. Meanwhile, G3: structural deficiency of 2 mm depth, 3 mm width and 3 mm length and with 1.5 mm extension into the prepared teeth. These structural defects in each subgroup were restored with CGI, RMGI and CR. Artificial carious lesion formation was induced at the cervical finish line with a demineralizing solution. The artificial carious lesions were restored as per the group distribution. Subsequently, teeth samples were prepared and cemented with Nickel-chromium full coverage restorations utilizing glass-ionomer luting cement. Teeth samples were thermocycled, isolated with nail varnish, and immersed in 0.1% methylene blue for 24 h. The teeth samples were sectioned longitudinally, dye penetration was evaluated with a stereomicroscope. The data were analyzed with Kruskal–Wallis and Mann–Whitney U tests. Results CGI-G1 recorded the highest micro-leakage score at 1.450; while CR-G3 recorded the least score (0.350). At a cementum-restoration interface, CR-G1 (0.850) documented the lowest micro-leakage; RMGI-G3 had a greater value at 1.700. Conclusions The hybrid CR could be effectively used to restore the restoration of a marginal gap around crown margins.

scholarly journals Marginal adaptation in proximal cavities restored with composites and other materials

2017 ◽  
Vol 20 (4) ◽  
pp. 63 ◽  
Author(s):  
Raphaela Farias Rodrigues ◽  
Suellen Scarcelli Senna ◽  
Ana Flávia Soares ◽  
Rafael Lia Mondelli ◽  
Paulo Silveira Francisconi ◽  
...  
Keyword(s):  
Composite Resin ◽  
Resin Composite ◽  
Glass Ionomer Cement ◽  
Composite Resins ◽  
Marginal Adaptation ◽  
Glass Ionomer ◽  
Marginal Gap ◽  
Significant Difference ◽  
Molar Teeth ◽  
Composite Flow

<p><strong>Objective</strong>: To evaluate the marginal adaptation, in enamel (E) and dentin (D), of composite resin (CR) associated with flowable resin composite (flow), bulk fill flowable base (bulk) and resin modified glass ionomer cement (RMGIC) in slot cavities. <strong>Material and Methods</strong>: The study was conducted after approval (Protocol No. 21148413.4.0000.5417) from Ethics Committee. Forty extracted human molar teeth were randomly assigned in eight experimental groups: E-CR, E-BULK, E-FLOW, E-RMGIC, D-CR, D-BULK, D-FLOW, D-RMGIC. The occlusal surface was planned, two slot cavities with standard sizes (depth: 2.0 mm, height: 2.5 mm, width: 2.0 mm) were created on a machine for making cavities. The teeth were restored and after 24h subjected to 2000 cyclic loading and sectioned for analysis of marginal adaptation by scanning electron microscopy (SEM). The micrographs were analyzed with the Image J program to measure the size of marginal gaps. The data were transformed into percentages (%GAPS = LG ÷ LM  × 100) and analyzed by 2-way ANOVA followed by the post hoc Tukey test (α=0.05). <strong>Results</strong>: There was a significant difference between different treatments (<em>p&lt;0.01</em>). The groups E-RMGIC (<em>p=0.001</em>) and D-RMGIC (<em>p=0</em>) had the highest percentage of marginal gap. Others groups showed similar percentage of marginal gap <em>(p&gt;0.05)</em>. <strong>Conclusions</strong>: It was concluded that restorations with flowable composite resin and bulk fill liners exhibit the same behavior, but the RMGIC liner increased marginal gap.</p><p><strong>Keywords: </strong>Composite resins; Dental marginal adaptation; Glass ionomer cements.</p>

scholarly journals Micro-CT and Microscopy Study of Internal and Marginal Gap to Tooth Surface of Crenelated versus Conventional Dental Indirect Veneers

Medicina ◽  
2021 ◽  
Vol 57 (8) ◽  
pp. 772
Author(s):  
Alexandra-Cristina Măroiu ◽  
Cosmin Sinescu ◽  
Virgil-Florin Duma ◽  
Florin Topală ◽  
Anca Jivănescu ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Tooth Surface ◽  
Characteristic Functions ◽  
The Novel ◽  
Micro Ct ◽  
Marginal Gap ◽  
Luting Cement ◽  
Computer Aided ◽  
Internal Adaptation ◽  
Internal Gap

1. Background and Objectives: Ceramic veneers represent the most appropriate treatment option for minimally invasive aesthetic rehabilitation. For long-term clinical success, the accurate marginal and internal adaptation of dental restorations are of paramount importance. The aim of this in vitro study is to assess the effect of a novel (patented) design of veneers compared to conventional ones on their marginal and internal gap to the prepared tooth surface. 2. Materials and Methods: Twenty-four lithium disilicate ceramic veneers are obtained using Computer-Aided-Design (CAD) and then milled using Computer-Aided-Manufacturing (CAM). The samples are divided into two groups: 12 conventional (CO) veneers (i.e., with a linear marginal contour) and 12 crenelated (CR) veneers, the latter with the novel sinusoidal marginal design. All samples are bonded to frontal teeth, and the adhesive interfaces are analyzed using two methods, optical microscopy and micro-Computed Tomography (CT): the former for the accuracy of the marginal gap and the latter for the internal gap (as well as for the homogeneity of the luting cement) of ceramic veneers. 3. Results: STATA and one-way ANOVA tests reveal significant differences between CO and CR veneers: (i) the marginal gap is smaller for CR (64 μm) than for CO veneers (236 μm); (ii) the internal adaptation is better for CR veneers: for a cement width of up to 120 μm, the covered surface for the CR group is 81.5%, while for the CO group it is 64.5%; (iii) the mean of the porosities within the cement is not significantly different (3.4 × 106 μm3 for CO and 3.9 × 106 μm3 for CR veneers), with a higher standard deviation for the CO group. Analytical modeling is achieved for internal gaps using the micro-CT results. The characteristic functions obtained allow us to compare the volume of luting cement for the two types of veneers. 4. Conclusion: The novel veneers design produces an improvement in the marginal and internal adaptation of the restorations to the prepared tooth surface. Thus, it provides favorable premises for better clinical performances.

Pulpal response to a glass-ionomer luting cement'

BDJ ◽  
1988 ◽  
Vol 165 (8) ◽  
pp. 279-279
Author(s):  
A W Walls ◽  
J J Murray ◽  
J F McCabe
Keyword(s):  
Glass Ionomer ◽  
Luting Cement

scholarly journals Biological restorations as a treatment option for primary molars with extensive coronal destruction: report of two cases

2007 ◽  
Vol 18 (3) ◽  
pp. 248-252 ◽  
Author(s):  
Karina Sanches ◽  
Fabrício Kitazono de Carvalho ◽  
Paulo Nelson-Filho ◽  
Sada Assed ◽  
Francisco Wanderley Garcia de Paula e Silva ◽  
...  
Keyword(s):  
Glass Ionomer Cement ◽  
Adhesive System ◽  
Tooth Surface ◽  
Primary Molars ◽  
Glass Ionomer ◽  
Technical Aspects ◽  
Tooth Structure ◽  
Occlusal Adjustment ◽  
Carious Lesions ◽  
Ionomer Cement

This article reports the cases of two young children aged 4 and 5 years, in whom biological restorations using tooth fragments were placed in primary molars with severely damaged crowns due to extensive carious lesions. After radiographic and clinical evaluation, tooth fragments obtained from extracted teeth in stock were autoclaved, adjusted to the prepared cavity and bonded to the remaining tooth structure with either adhesive system (Case 1) or dual-cure resin-based cement (Case 2) over a calcium hydroxide layer and a glass ionomer cement base. Occlusal adjustment was performed and topical sodium fluoride was applied to tooth surface. Periodical clinical and radiographic controls were carried out and the restored teeth were followed up for 4 and 3 years, respectively, until exfoliation. In these two reports, the technical aspects are described and the benefits and disadvantages of biological restorations as an alternative treatment for rehabilitation of severely destroyed primary molars are discussed.

scholarly journals Evaluation of marginal fit and microleakage of monolithic zirconia crowns cemented by bio-active and glass ionomer cements: In vitro study

2020 ◽  
Vol 23 (1) ◽  
Author(s):  
Radwa Hamdy Aboelenen ◽  
Ashraf Mokhtar ◽  
Hanaa Zaghloul
Keyword(s):  
Glass Ionomer Cement ◽  
Glass Ionomer ◽  
Marginal Gap ◽  
Marginal Fit ◽  
Group I ◽  
Significant Difference ◽  
Zirconia Crowns ◽  
Monolithic Zirconia ◽  
Ionomer Cement ◽  
Gap Values

Objective: To evaluate the marginal fit and microleakage of monolithic zirconia crowns cemented with bioactive cement (Ceramir) compared to that cemented with glass ionomer cement and to evaluate the effect of thermocycling on marginal fit. Materials and methods: Twenty sound human molar teeth were prepared to receive a monolithic zirconia crowns. Teeth were divided randomly into two equal groups according to the type of luting cement. Group I: glass ionomer cement and group II: Ceramir cement. After cementation, the vertical marginal gap was assessed by using stereomicroscope before and after thermocycling. Twenty equidistant measurement points were taken for each crown. Leakage assessment was carried out using Fuchsin dye penetration followed by digital photography under a stereomicroscope. Data were analyzed by Mann-Whitney U test to compare between the two luting cements. Wilcoxon signed-rank test was used to evaluate the effect of thermocycling on the marginal fit (P ≤ 0.05)
Results: Whether before or after thermocycling, the results showed no significant difference between the marginal gap values of the two tested groups. For both groups, there was a significant increase in marginal gap values after thermocycling. Also, there was no significant difference between leakage scores of the two tested groups. Conclusions: Similarity in the physical properties and chemical composition of the two cements result in a non- significant effect on the vertical marginal fit and the extent of microleakage of translucent zirconia crowns.  Thermocycling had a negative impact on the vertical marginal gap of the two tested luting agents.

The impact of oral hygiene, the intensity and increase of caries on the condition of Equia Fil glass ionomer and Tetric EvoCeram composite proximal restorations in permanent teeth

2019 ◽  
Vol 24 (2) ◽  
Author(s):  
Piotr Rożniatowski ◽  
Emil Korporowicz ◽  
Dariusz Gozdowski ◽  
Dorota Olczak-Kowalczyk
Keyword(s):  
Oral Hygiene ◽  
Permanent Teeth ◽  
Glass Ionomer ◽  
Significant Relationships ◽  
Carious Lesions ◽  
Direct Restoration ◽  
Bacterial Plaque ◽  
Medical University ◽  
The Impact

Introduction. Glass-ionomer cements and composite materials are widely used for direct restoration of carious lesions, also in young permanent teeth. However, knowledge on the effects of cariogenic factors on the quality of restorations performed using these materials, especially those covering proximal surfaces, which are more often exposed to bacterial plaque, is insufficient. Aim. The aim of the study was to assess the impact of oral hygiene and increased intensity of caries on proximal composite and glass ionomer restorations in young permanent teeth after 2 years of usage. Material and methods. Equia Fil glass-ionomer and Tetric EvoCeram composite restorations were performed in patients aged between 12 and 20 years with proximal carious lesions in premolars and molars. The clinical condition of restorations was assessed and indices such as OHI-S and D1-2DMFT (along with their increased values) were calculated at baseline, as well as during follow-up visits at 6, 12, 18 and 24 months. Correlations between clinical assessment of restorations and indices for oral hygiene and caries intensity, their increase and increased number of teeth with carious spots were evaluated. The study was approved by the Bioethics Committee of the Medical University of Warsaw (No. KB/157/2013). Results. A total of 100 proximal restorations were performed in 49 patients. After 24 months, 98 restorations (50 Equia Fil and 48 Tetric EvoCeram) were evaluated. Mean baseline OHI-S and D1-2DMFT were 1.37 and 12.04, respectively, for Equia Fil restorations, and 1.27 and 10.38 for Tetric restorations, with the following values reported during follow-up: 1.80 and 15.4; 1.63 and 12.38. Statistically significant relationships were found between OHI-S and values describing the state of materials. These values increased with increasing OHI-S and D1-2DMFT. Conclusions. Both Tetric Evo Ceram and Equia Fil restorations are susceptible to cariogenic factors.

The Effect of Nano-Sized β-Tricalcium Phosphate on Remineralization in Glass Ionomer Dental Luting Cement

2007 ◽  
pp. 861-864
Author(s):  
Y.W. Hong ◽  
J.H. Kim ◽  
B.H. Lee ◽  
Yong Keun Lee ◽  
B.J. Choi ◽  
...  
Keyword(s):  
Tricalcium Phosphate ◽  
Glass Ionomer ◽  
Luting Cement

scholarly journals Pulpotomy of Primary Molar Teeth with Biodentine – A Case Report

2017 ◽  
Vol 7 (3) ◽  
pp. 238-241
Author(s):  
Md Abdul Hannan Sheikh ◽  
Shakila Khanum ◽  
Abdul Kader Sheikh ◽  
Shamsia Sultana Nisa
Keyword(s):  
Case Report ◽  
Radiological Examination ◽  
Glass Ionomer ◽  
Primary Molar ◽  
Lower Jaw ◽  
Conservative Dentistry ◽  
Molar Teeth

A 7-year-old boy was referred to the department of conservative dentistry and endodontics, Bangabandhu Sheikh Mujib Medial University (BSMMU) with pain on his left lower jaw. After clinical and radiological examination, it was diagnosed as a case of reversible pulpitis. Biodentine pulpotomy was performed followed by permanent restoration with glass-ionomer. The presented case was done to evaluate the efficacy of Biodentine as pulpotomy medicament in primary molar teeth, on follow-up it was found to be successful.Birdem Med J 2017; 7(3): 238-241

Sign in / Sign up

Export Citation Format

Share Document